• Title/Summary/Keyword: the imaginary

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Study on Hot Spot Stress Calculation for Welded Joints using 3D Solid Finite Elements (3차원 솔리드 요소를 이용한 용접부 핫스팟 응력 계산에 대한 연구)

  • Oh, Jung-Sik;Kim, Yooil;Jeon, Seok-Hee
    • Journal of Ocean Engineering and Technology
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    • v.29 no.1
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    • pp.45-55
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    • 2015
  • Because of the high stress concentration near the toe of a welded joint, the calculation of local stress using the finite element method which is relevant to the fatigue strength of the weld toe crack, is a challenging task. This is mainly caused by the sensitivity of finite element analysis, which usually occurs near the area of a dramatically changing stress field. This paper presents a novel numerical method through which a less mesh-sensitive local stress calculation can be achieved based on the 3D solid finite element, strictly sticking to the original definition of hot spot stress. In order to achieve the goal, a traction stress, defined at 0.5t and 1.5t away from the weld toe, was calculated using either a force-equivalent or work-equivalent approach, both of which are based on the internal nodal forces on the imaginary cut planes. In the force-equivalent approach, the traction stress on the imaginary cut plane was calculated using the simple force and moment equilibrium, whereas the equivalence of the work done by both the nodal forces and linearized traction stress was employed in the work-equivalent approach. In order to confirm the validity of the proposed method, five typical welded joints widely used in ships and offshore structures were analyzed using five different solid element types and four different mesh sizes. Finally, the performance of the proposed method was compared with that of the traditionally used surface stress extrapolation method. It turned out that the sensitivity of the hot spot stress for the analyzed typical welded joints obtained from the proposed method outperformed the traditional extrapolation method by far.

The Lure of the Racial Other: Race and Sexuality in D. H. Lawrence's Quetzalcoatl (인종적 타자의 매혹 -로런스의 『께짤코아틀』에 그려진 인종과 성)

  • Kim, Sungho
    • Journal of English Language & Literature
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    • v.55 no.4
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    • pp.693-718
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    • 2009
  • Kate Burns, a disillusioned Irish woman in Quetzalcoatl, has alternating feelings of fear, repulsion, oppression, compassion, and fascination vis-à-vis Mexican people. Together, these feelings are constitutive of a psychic process in which an imaginary appropriation of the other takes place. In this process white subjectivity represents or reconstructs the dark race precisely as its other. At the same time, Kate's feelings register her anxious recognition of the resistant, unappropriated being of the dark people: their true 'otherness,' or what Žižek calls "the excess of existence over representation." The otherness, frequently racial and sexual, evokes mixed feelings in the white subject. Kate's at once amorous and aggressive response to Ramón's body provides a case in point. Kate's emotional undulation is considerably mitigated in The Plumed Serpent, the revised version of the novel in which the theme of 'blood-mixing' is pushed to the ultimate point. Yet the interracial marriage resolves neither the racial nor the ontologico-sexual issues raised in the first version. Kate is still attracted to Ramón in his sagacious sensuality but goes on to get married to Cipriano, a pure Indian, only to find his mechanical masculinity ever unpalatable. This shows, not just Lawrence's wilful commitment to the 'blood-mixing' theme, but perhaps his lingering taboo against miscegenation as well. Changes in the plot entail those in the narrative voice. In Quetzalcoatl, Owen, a spectatorial and gossipy character, frequently competes for narration with the fully participant third-person narrator. In The Plumed Serpent, the third-person narrator becomes predominant, now attempting with greater confidence to present the reality of the racial other immediately to European readership. While such immediacy is illusional, narrative insistence on it implies a struggle to displace racial stereotypes and offer an experiential understanding of the other.

The Present and Future of Avata Fashion Market - The Strategic of Avata Fashion Marketing- (아바타 패션시장의 현재와 미래 -아바타 시장 패션 마케팅의 전략적 접근-)

  • 송영주
    • Journal of the Korea Fashion and Costume Design Association
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    • v.5 no.1
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    • pp.47-57
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    • 2003
  • Today there are increasing number of internet users. Internet is wide use of banking, shopping, school and studding. Also, internet is used in everyday living and its use is getting larger. Korea has the one of the most use of internet in the world. Most of houses have computer with internet, and there are alot of PC rooms in the streets. anyone can enjoy the internet anytime anywhere. Now, in internet there are group formed by community purpose. The 'dot com' companies was not making much of profit from their goods. However, they came out with an idea "avata" Soon, the avata became a hit and its known for its success. Avata is used for E-mail, name card, post stamp, and chatting. Also, Avata is very popular among chatting service, icon chatting, and 3D graphic chatting. Avata represent the user himself in internet and computer created imaginary space, and it connects between imaginary space and reality, also it exist between real name and nick name. Past years, the internet users were satisfied with their nick name, however resent year users wants to express them more. For the result the "Avata" is created to fulfill the need to express user themselves. There are three different ways to see how Korean react to fashion industry. first, Korea's land structure makes the density of population high, the transmission of information is very fast. Next, collectively is high among Koreans. Finally wide use to internet made the transmission of the fashion information much faster. The User wants to keep up with the fashion at the sametime they want to express themselves, and "avata" is the one that fulfill their needs. New technology and the desire to express themselves made the new term "avata industry". which was never existed before. In addition, the internet markets have potential power. Although, it is in start stage of avata industry. However, the experts say that its possibility of its development is not predictable. In conclusion, watch the development of a situation to analyze the avata industry and develop new avata fashion market.

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A Study on Experiments and Two Interpretations of Probability in 《Probability and Statistics》 and Its Educational Implications (《확률과 통계》의 시행과 두 가지 확률에 대한 고찰 및 교육적 시사점)

  • Lee, Gi Don
    • Journal for History of Mathematics
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    • v.31 no.5
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    • pp.251-269
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    • 2018
  • Empirical probability and classical probability, which are two interpretations of Kolmogorov's axiom, are two ways to recognize the chances of events occurring in the real world. In this paper, I analyzed and suggested the contents of the high school textbooks ${\ll}$Probability and Statistics${\gg}$, associated with two interpretations of probability and experiments on which two interpretations are based. By presenting the cases required expressly stating what the experiment is for supporting students' understanding of some concepts, it was discussed that stating or not stating what the experiment is should be carefully determined by the educational intent. Especially, I suggested that in the textbooks we contrast the good idea of calculating the ratios of two possibilities in the imaginary world of the classical probability with the normal idea of grasping the chances of events through the frequencies in the real world of the empirical probability, with distinguishing the experiments in two interpretations of probability. I also suggested that in the textbooks we make it clear that the Weak Law of Large Numbers justifies our expectations of the frequencies' reflecting the chances of events occurring in the real world under ideal conditions. Teaching and learning about the aesthetic elements and the practicality of imaginary mathematical thinking supported by these textbooks statements could be one form of Humanities education in mathematics as STEAM education.

Virtual Destination Aided GAODV Routing Protocol (가상 위치 도움 GAODV 라우팅 프로토콜)

  • Choi, Youngchol
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.21 no.9
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    • pp.1649-1654
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    • 2017
  • The route request (RREQ) packet of the GAODV is propagated in a unicast-manner using the location of the destination, but the application of the GAODV is restricted by the assumption for the known destination's location. In this paper, we propose a virtual destination aided GAODV (VDA-GAODV) that alleviates the uncertainty of the destination's location due to the mobility. Instead of the known location of the destination, the VDA-GAODV disseminates a RREQ packet to an imaginary location on the line connecting the source and the destination. We derive an optimal imaginary destination that makes RREQ rebroadcasts cover the possible locations of the destination as much as possible. The VDA-GAODV enables the RREQ propagation to cover 95 % of the one-hop communication area centered at the originally known location of the destination, which is larger than that of the original GAODV by 23 %.

Effect of Thermal Aging on Electrical Properties of Low Density Polyethylene

  • Wang, Can;Xie, Yaoheng;Pan, Hua;Wang, Youyuan
    • Journal of Electrical Engineering and Technology
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    • v.13 no.6
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    • pp.2412-2420
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    • 2018
  • The thermal degradation of low density polyethylene (LDPE) will accelerate the production of carbonyl groups (C=O), which can act as the induced dipoles under high voltage. In this paper, we researched the dielectric properties and space charge behavior of LDPE after thermal aging, which can help us to understand the correlation between carbonyl groups (C=O) and electrical properties of LDPE. The spectra results show that LDPE exhibit obvious thermooxidative reactions when the aging time is 35 days and the productions mainly contain carboxylic acid, carboxylic eater and carboxylic anhydride, whose amount increase with the increasing of aging time. The dielectric properties show that the real permittivity of LDPE is inversely proportional to temperature before aging and subsequently become proportional to temperature after thermal aging. Furthermore, both the real and imaginary permittivity increase sharply with the increasing of aging time. The fitting results of imaginary permittivity show that DC conductivity become more sensitive about temperature after thermal aging. On this basis, the active energies of materials calculated from DC conductivity increase first and then decrease with the increasing of aging time. In addition, the space charge results show that the heterocharges accumulated near electrodes in LDPE change to the homocharges after thermal aging and the mean volume charge density increase with the increasing of aging time. It is considered that the overlaps caused by electrical potential area is the main reason for the increase of DC conductivity.

Men's ego-images represented on the fashion blogs in web 2.0 era (웹 2.0 시대 패션에 나타난 남성의 자아이미지 - 퍼스널 패션블로그를 중심으로 -)

  • Suh, Sung Eun
    • The Research Journal of the Costume Culture
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    • v.22 no.5
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    • pp.760-775
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    • 2014
  • In the era of 2.0 web, blog has become the media that men can express themselves with fashion more actively and independently, as paying much attention to their personal appearance and cultivating an upscale lifestyle. They often create their fashion images in the virtual space where enables a free and creative operations of self-expression. The study aims to identify the types of men's ego-images represented on the personal fashion blogs based on the framework of analysis from the previous research (Suh, 2014), to build the base data for analyzing men's fashion style in $21^{st}$21st century that reflects changes in men's sexual images, and to verify the framework as comparing with the previous case study about the women blogs (Suh, 2014). The case studies conducted 5 men's personal blogs such as bryanboy, iamgala, little fashionisto, katelovesme, and stylentonic. The study results almost same types of women's ego-images as following. The imaginary ego-image is classified as narcissism, regression, identification, and virtuality, the social ego-image as symbolism of roles and others'desire, the real ego as primary instinct, practical reality, object a, jouissance and sexual perversion. The personal style of men shown on the fashion blogs appears as a significant factor to analyze male customers in the growing men's beauty and fashion market.

The Modern Perspective in Fashion Illustration (패션일러스트레이션에 나타난 현대적 원근법)

  • 박선희;유영선
    • Journal of the Korean Society of Costume
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    • v.53 no.7
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    • pp.57-68
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    • 2003
  • The purpose of this study is to develop a creative perspective technique in fashion illustration through analyzing perspective in visual art experienced a great variety. This study was analyzed by examining the general theories based on the discovery of perspective and investigating the modern perspective in fashion illustration related to the method of spatial expression in visual art. A complex perspective of existing perspective gives the effect of reapperance of actual space and three-dimentional form in a plane. Because of being used as not only one perspective technique but also some perspectives technique, its expression can be more realistic. An amplified perspective gives the effect of visual illusion just like being suck in space inside and come out from screen outside by distorting the human body. A confused perspective of space gives the visual illusional effect of collapsing actual space and misunderstanding three-dimensional form by distorting the form of the space and changing the nature as an object of fashion. A reiterated or duplicated perspective gives effect of interpreting invisible space as imaginary space by overlapping and eliminating the object of fashion. An irrational perspective of spatial illusion gives the effect of disorganization experienced thinking by strange shapes and new recognition of irrational space by extraordinary visual connection. It has a tendency to surrealism. In conclusion, the modern perspective in fashion illustration has made the best use of not only new perspective since 1980, but general perspective before 1980. By the modern perspective expression. the viewer has made a chance to experience imaginary spaces indirectly, and the author has been able to express emotions by his or her new attempt in the screen.

A Study on Contemporary Murals of Korea; in Lacan′s Psychoanalytic View (라캉의 정신분석학 개념으로 살펴 본 한국의 현대 벽화)

  • 조현신
    • Archives of design research
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    • v.15 no.2
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    • pp.187-196
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    • 2002
  • This article is a study on modern wall painting of Korea. The system of wall paintings in Korea is studied in the first chapter. It contains the function, the painters'peculiar character, the psychological basis and the subjects of wall painting. The most popular subjects are the Lee dynasty's folk custom and visual symbols of this period. The second chapter sees the study of these subjects in Lacan's psychoanalytic view. The representation of Lee dynasts custom in this post modern society reveal that the Korean lives in the realm of the imaginary in visual level. That is the projection of their desire to be in the perfect community which is believed to be existed in Lee's dynasty. However the visual circumstance in Korea is the symbolic which is constructed of the Western symbols. This visual confliction reveals Korean Habitus and the lack of independent visual expression method. For conclusion, it is proposed that the relation of Korean Habitus and design must be studied to create proper visual circumstance.

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A Study of the Electrical Properties of the Buccal Area using Facial Surface Electromyography

  • Choi, Yoo Min;Kim, Jong Uk;Kim, Lak Hyung;Yook, Tae Han
    • Journal of Acupuncture Research
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    • v.34 no.2
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    • pp.75-82
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    • 2017
  • Objectives : The purpose of this study was to determine the electrical properties of the buccal area using facial surface electromyography (sEMG). Methods : This research was conducted on 44 healthy participants irrespective of their sex. Surface electrodes were attached to the midpoints of three imaginary lines connecting ST4 (Dicang) to ST6 (Jiache), ST4 to SI18 (Quanliao), and ST4 to the center point of SI18 and ST6. Then, the participants were trained in the movement that included a comprehensive action of buccal area. While the participants were performing the motion, sEMG values ($E_1$, $E_2$, $E_3$) and the distance change of the three imaginary lines ($D_1$, $D_2$, $D_3$) were measured. The data were statistically analyzed using SPSS ver. 22.0. Results : Significant differences were observed in the distance changes ($D_1$>$D_3$, $D_2$>$D_3$) and sEMG values ($E_1$<$E_2$<$E_3$). Moreover, there were positive correlations between $D_1$ and $E_1$, $D_2$ and $E_2$. Conclusion : We suggest that the measurement at ST4 to the center point of ST6 and SI18 with this motion would be adequate to check the electrical characteristics of the buccal area.